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pwndbg_start_monitor

Start a background monitor to capture asynchronous debugger events (breakpoints, signals, crashes) between tool calls, recording them in the session log and triggering updates.

Instructions

Start the background event monitor for a session.

The monitor watches for asynchronous debugger events (breakpoint hits, signals, crashes) between tool calls. Events are recorded in the session's event log and trigger MCP resource-updated notifications.

This is optional — all core debugging functionality works without the monitor. The monitor is useful for long-running programs where events may occur outside of active tool calls.

Args: session_id: The UUID of the session.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
session_idYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description bears the full burden of behavioral disclosure. It explains that events are recorded and trigger notifications, but lacks details on potential side effects (e.g., starting monitor twice, performance impact, or error handling). Some useful context but incomplete.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise, well-structured, and front-loaded with the essential information. Each sentence contributes meaning without redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description covers the main aspects: purpose, event types, optional nature, and when it is useful. It does not mention the corresponding stop_monitor tool, which would enhance completeness. However, given the tool's simplicity and the presence of an output schema, it is mostly complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The description adds minimal value over the input schema: it mentions 'UUID' for session_id, which is slightly more specific than the schema's title 'Session Id'. Given 0% schema description coverage, the description should compensate more, but it provides only basic context. Baseline 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states that it starts a background event monitor, lists the types of events it watches (breakpoint hits, signals, crashes), and explains its purpose (recording events and triggering notifications). It distinguishes itself from core debugging functions by noting it is optional.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly states that the monitor is optional and useful for long-running programs, providing clear guidance on when to use it. However, it does not mention when not to use it or direct users to alternatives like stop_monitor or get_events.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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